package com.liuzy.test;

import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

public class RestTemplateConfig {
    private static final RequestConfig requestConfig = RequestConfig.custom()
            .setSocketTimeout(10000) //服务器返回数据(response)的时间，超过该时间抛出read timeout
            .setConnectTimeout(5000)//连接上服务器(握手成功)的时间，超出该时间抛出connect timeout
            .setConnectionRequestTimeout(1000)//从连接池中获取连接的超时时间，超过该时间未拿到可用连接，会抛出org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool
            .build();
    private static final Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
            .register("http", PlainConnectionSocketFactory.getSocketFactory())
            .register("https", SSLConnectionSocketFactory.getSocketFactory())
            .build();
    private static final PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);

    static {
        System.setProperty("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.SimpleLog");
        System.setProperty("org.apache.commons.logging.simplelog.showdatetime", "false");
        System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.http", "ERROR");
        System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.http.wire", "ERROR");
        // 设置整个连接池最大连接数 根据自己的场景决定
        connectionManager.setMaxTotal(1000);
        // 路由是对maxTotal的细分
        connectionManager.setDefaultMaxPerRoute(100);
    }

    public static RestTemplate restTemplate() {
        return new RestTemplate(new HttpComponentsClientHttpRequestFactory(HttpClientBuilder.create()
                .setDefaultRequestConfig(requestConfig)
                .setConnectionManager(connectionManager)
                .build()));
    }
}